They are shaped like my feet
The front of the shoe is nearly straight across, only curving toward the back in the last third or so at the little-toe end. (See the picture of the shoe from above.) My feet are shaped this way also, so these shoes fit very well. Though I did get 45 wide when the measurement procedure would have said I would fit in size 44 regular. When I first put them on, I was worried that the toe box was too short vertically and was pushing on the tops of my toes. But after a couple rides it felt fine.